Radio Frequency Module Supporting Multiple Carriers, Base Station and Carrier Distribution Method

ABSTRACT

A radio frequency module supports multiple carriers includes a carrier generating apparatus, a carrier distributor, a carrier synthesizer, and at least two transmit channel. T carrier generating apparatus is connected to the carrier synthesizer, the carrier synthesizer is connected to the transmit channels, and the carrier distributor is separately connected to the carrier synthesizer and the transmit channels. According to embodiments of the present invention, the carrier distributor distributes a specified transmit channel for the multiple carrier signals according to power load capacity of each transmit channel and a total power of multiple carrier signals that need to be distributed.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.13/725,314, filed on Dec. 21, 2012 and now U.S. Pat. No. 8,503,327issued Aug. 6, 2013, which is a continuation of InternationalApplication No. PCT/CN2011/076811, filed on Jul. 4, 2011. Theafore-mentioned patent applications are hereby incorporated by referencein their entireties.

TECHNICAL FIELD

Embodiments of the present invention relate to the field ofcommunications technologies, and in particular, to a radio frequencymodule supporting multiple carriers, a base station, and a carrierdistribution method.

BACKGROUND

With the increasingly high integration of mobile communication devices,it is required to achieve larger capacity and higher coverage capabilityat a unit cost. Multi-carrier, multiple-channel radio frequency moduleproducts for global system for mobile communications (GSM), universalmobile telecommunications system (UMTS), long term evolution (LTE) andcode division multiple access (CMDA) become a trend. A radio frequencymodule that integrates large capacity and supports multiple carriersgenerally has the following features: supporting multiple carriers, forexample, one module supports more than 2 carriers; supporting multiplemodes, for example, supporting the GSM and the UMTS at the same time,supporting the GSM and the LTE at the same time, supporting the UMTS andthe LTE at the same time, supporting the CDMA and the LTE at the sametime, and so on; and supporting multiple channels, for example, both theUMTS and the LTE support the multiple-input multiple-output (MIMO)technology.

In the prior art, when a module with a large configuration capability isapplied in a situation of non-full configuration, if a radio frequencymodule capable of supporting a large number of carriers is applied tobear a small number of carriers, a waste of a radio frequency channeloccurs, for example, a certain radio frequency module supportingmultiple carriers is capable of supporting 8 carriers at most, butactually bears only 4 carriers. In this case, bearing of 4 carriers iswasted. However, power consumption of the radio frequency modulesupporting multiple carriers in this situation is almost the same asthat when 8 carriers are borne, resulting in a waste of powerconsumption and low efficiency of the radio frequency module.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a radio frequency modulesupporting multiple carriers, a base station, and a carrier distributionmethod to solve defects of a waste of power consumption and lowefficiency of a radio frequency module in the prior art, therebyimproving efficiency of a module with multiple carriers and savingenergy.

An embodiment of the present invention provides a radio frequency modulesupporting multiple carriers, including a carrier generating apparatus,a carrier distributor, a carrier synthesizer, and at least two transmitchannels. The carrier generating apparatus is connected to the carriersynthesizer and the carrier synthesizer is connected to the transmitchannels. The carrier distributor is separately connected to the carriersynthesizer and the transmit channels.

The carrier generating apparatus is configured to generate multiplecarrier signals.

The carrier distributor is configured to distribute, according to powerload capacity of each transmit channel and a total power of multiplecarrier signals that need to be distributed, a specified transmitchannel for the multiple carrier signals, and send a distribution resultto the carrier synthesizer.

The carrier synthesizer is configured to synthesize, according to thedistribution result of the carrier distributor, the multiple carriersignals that are distributed to the specified transmit channel, and thensend the synthesized signals to the specified transmit channel.

The transmit channels are configured to transmit the multiple carriersignals that are synthesized by the carrier synthesizer.

An embodiment of the present invention provides a base station, whichincludes any radio frequency module supporting multiple carriersaccording to the embodiments of the present invention.

An embodiment of the present invention provides a carrier distributionmethod. A carrier distributor distributes a specified transmit channelfor the multiple carrier signals according to power load capacity ofeach transmit channel and a total power of multiple carrier signals thatneed to be distributed. A distribution result is sent to a carriersynthesizer. The carrier synthesizer synthesizes the multiple carriersignals that are distributed to the specified transmit channel accordingto the distribution result of the carrier distributor and then sends thesynthesized signals to the specified transmit channel.

According to the radio frequency module supporting multiple carriers,the base station, and the carrier distribution method in the embodimentsof the present invention, in a situation of non-full configuration, thecarrier distributor distributes, according to the power load capacity ofeach transmit channel and the total power of the multiple carriersignals that need to be distributed, the specified transmit channel forthe multiple carrier signals, thereby improving efficiency of a modulewith multiple carriers and saving energy.

BRIEF DESCRIPTION OF THE DRAWINGS

To describe technical solutions in the embodiments of the presentinvention or in the prior art more clearly, the accompanying drawingsrequired in descriptions about the embodiments or the prior art arebriefly described below. Apparently, the accompanying drawings describedbelow illustrate only some embodiments of the present invention, andpersons of ordinary skill in the art may still obtain other accompanyingdrawings from these accompanying drawings without creative efforts.

FIG. 1 is a schematic diagram of a radio frequency module supportingmultiple carriers according to a first embodiment of the presentinvention;

FIG. 2 a is a schematic diagram of a radio frequency module supportingmultiple carriers according to a second embodiment of the presentinvention;

FIG. 2 b is a schematic diagram of an effect of the radio frequencymodule supporting multiple carriers according to the second embodimentof the present invention; and

FIG. 3 is a schematic diagram of a carrier distribution method accordingto a fourth embodiment of the present invention.

DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

In order to make the objectives, technical solutions, and advantages ofthe embodiments of the present invention more comprehensible, thetechnical solutions in the embodiments of the present invention areclearly and completely described below with reference to theaccompanying drawings. Apparently, the embodiments to be described aremerely a part rather than all of the embodiments of the presentinvention. All other embodiments obtained by persons of ordinary skillin the art based on the embodiments of the present invention withoutcreative efforts shall fall within the protection scope of the presentinvention.

Embodiment 1

FIG. 1 is a schematic diagram of a radio frequency module supportingmultiple carriers according to a first embodiment of the presentinvention. As shown in FIG. 1, the radio frequency module supportingmultiple carriers includes a carrier generating apparatus 11, a carrierdistributor 13, a carrier synthesizer 15, and at least two transmitchannels 17. The carrier generating apparatus 11 is connected to thecarrier synthesizer 15, the carrier synthesizer 15 is connected to thetransmit channels 17, and the carrier distributor 13 is separatelyconnected to the carrier synthesizer 15 and the transmit channels 17. Inthis embodiment of the present invention, there are two or more transmitchannels 17, and each transmit channel is separately connected to thecarrier synthesizer 15 and the carrier distributor 13.

The carrier generating apparatus 11 is configured to generate multiplecarrier signals, and a carrier mode of the multiple carrier signals maybe any one or any combination of a GSM carrier, a UMTS carrier, an LTEcarrier, and a CDMA carrier.

The carrier generating apparatus includes any one or any combination ofa GSM carrier generator, a UMTS carrier generator, an LTE carriergenerator, and a CDMA carrier generator.

The carrier distributor 13 is configured to distribute, according topower load capacity of each transmit channel 17 and a total power ofmultiple carrier signals that need to be distributed, a specifiedtransmit channel 17 for the multiple carrier signals, and send adistribution result to the carrier synthesizer 15. In addition, thecarrier distributor 13 may further be configured to deactivate an idletransmit channel 17. Specifically, in a situation of non-fullconfiguration, the carrier distributor 13 may preferentially andcentrally use one transmit channel 17, and after the power load capacityof the transmit channel 17 is used up, the carrier distributor 13 usesanother transmit channel 17. In the process of distribution, if an idlechannel to which no carrier is distributed is detected, the carrierdistributor 13 may deactivate the idle transmit channel 17. Operationsof distribution, activation, and deactivation by the carrier distributor13 may be performed each time when carriers need to be re-distributed,or may be a dynamic process. Specifically, the power load capacity ofeach transmit channel 17 and a power of each carrier signal that needsto be distributed may be preset, or be acquired from a control commandsent by a base station.

The carrier synthesizer 15 is configured to synthesize, according to thedistribution result of the carrier distributor 13, the multiple carriersignals that are distributed to the specified transmit channel 17, andthen send the synthesized signals to the specified transmit channel 17.

The transmit channels 17 are configured to transmit the multiple carriersignals that are synthesized by the carrier synthesizer 15.Specifically, when the carrier distributor 13 instructs that a certaintransmit channel 17 be activated, the transmit channel 17 may transmitthe multiple carrier signals that are synthesized and acquired from thecarrier synthesizer 15; and when the carrier distributor 13 instructsthat a certain transmit channel 17 be deactivated, the transmit channel17 stops working.

For example, assuming that the radio frequency module supportingmultiple carriers has two transmit channels and the carrier generatingapparatus 11 generates a GSM carrier and an LTE carrier, in thesituation of non-full configuration, the carrier distributor 13distributes, according to the power load capacity of each transmitchannel 17 and the total power of the multiple carrier signals that needto be distributed, a specified transmit channel 17 for the GSM carrierand the LTE carrier, and sends the distribution result to the carriersynthesizer 15, and the carrier distributor 13 deactivates anothertransmit channel 17 that is idle and not specified; and in this case,the carrier synthesizer 15 may synthesize, according to the distributionresult of the carrier distributor 13, the GSM carrier and the LTEcarrier, and then send the carriers to the specified transmit channel17.

According to this embodiment, in the situation of non-fullconfiguration, the carrier distributor distributes, according to thepower load capacity of each transmit channel and the total power of themultiple carrier signals that need to be distributed, a specifiedtransmit channel for the multiple carrier signals, thereby improvingefficiency of a module with multiple carriers; and the carrierdistributor may deactivate an idle transmit channel, thereby reducingthe power consumption of the radio frequency module supporting multiplecarriers and saving energy.

Embodiment 2

FIG. 2 a is a schematic diagram of a radio frequency module supportingmultiple carriers according to a second embodiment of the presentinvention. As shown in FIG. 2 a, referring to the first embodiment, achannel switch 170 may be set on the transmit channel 17 of the radiofrequency module supporting multiple carriers based on the firstembodiment, where the channel switch 170 is configured to activate ordeactivate the transmit channel 17 according to an instruction of thecarrier distributor 13. The channel switch 170 is controlled by thecarrier distributor 13, and deactivates and activates an idle transmitchannel 17 according to an instruction of the carrier distributor 13.Each transmit channel 17 may be connected to a corresponding channelswitch 170, or one transmit channel 17 may not be set with a channelswitch 170. In this case, the carrier distributor may include: apreferentially distributing unit 20, configured to set a transmitchannel to an active state by default. The preferentially distributingunit 20 of the carrier distributor 13 may preferentially and centrallydistribute multiple carrier signals to the transmit channel 17 that isin the active state by default.

The carrier distributor 13 may further include a centrally distributingunit 21, configured to centrally distribute the multiple carrier signalsto the specified transmit channel 17 if power load capacity of thespecified transmit channel 17 is higher than the total power of themultiple carrier signals; and preferentially and centrally distributethe multiple carrier signals to the specified transmit channel 17 anddistribute the remaining carrier signals to another transmit channel 17if the power load capacity of the specified transmit channel 17 is lowerthan the total power of the multiple carrier signals. For example,assume that the multiple carrier signals that are generated by thecarrier generating apparatus 11 include a GSM carrier, a UMTS carrier,and an LTE carrier, where after the GSM carrier and the UMTS carrier arepreferentially and centrally distributed to the specified transmitchannel, the LTE carrier may be distributed to another transmit channel,and a deactivating unit 23, configured to, if it is detected that anidle transmit channel 17 to which no carrier is distributed exists afterthe carrier distribution, send an deactivation instruction to a channelswitch 170 corresponding to the idle transmit channel 17. In this way,the channel switch may be instructed to deactivate the idle transmitchannel, thereby reducing power consumption of the radio frequencymodule and saving energy.

Specifically, the multiple carrier signals in this embodiment of thepresent invention may include any one or any combination of a GSMcarrier, a UMTS carrier, an LTE carrier, and a CDMA carrier; and thecarrier generating apparatus 11 may include any one or any combinationof a GSM carrier generator, a UMTS carrier generator, an LTE carriergenerator, and a CDMA carrier generator.

FIG. 2 b is a schematic diagram of an effect of the radio frequencymodule supporting multiple carriers according to the second embodimentof the present invention. As shown in FIG. 2 b, assuming that the radiofrequency module supporting multiple carriers has two transmit channels,the dashed line in the figure is a curve of efficiency of a radiofrequency module in the prior art, and the solid line is a curve ofefficiency of the radio frequency module after this embodiment of thepresent invention is adopted. It may be seen that in a situation of lowconfiguration, the efficiency of the radio frequency module is improvedsignificantly. In addition, power consumption of the radio frequencymodule is reduced greatly, for example: power consumption of fourcarrier signals of GSM S444, 20W/C that are distributed on two transmitchannels is 17% higher than that of four carrier signals that arecentrally distributed on one transmit channel with the other channeldeactivated. The preceding curve diagram and data are for referenceonly, and based on different test and verification environments, animmaterial difference may exist between the acquired data and theexperimental data that is provided in this embodiment of the presentinvention, that is, the two types of data may not be completelyconsistent with each other. Therefore, the schematic value and curvedescribed here should not be construed as a limitation to the presentinvention and embodiments thereof.

According to this embodiment, in a situation of non-full configuration,the centrally distributing unit of the carrier distributor centrallydistributes, according to the power load capacity of each transmitchannel and the total power of the multiple carrier signals that need tobe distributed, the multiple carrier signals to a specified transmitchannel, thereby improving efficiency of a module with multiplecarriers; and the carrier distributor may deactivate an idle transmitchannel, thereby reducing the power consumption of the radio frequencymodule supporting multiple carriers and saving energy.

Embodiment 3

An embodiment of the present invention further provides a base station,including a radio frequency module supporting multiple carriers that isof any one of the structures in the preceding embodiments. In asituation of non-full configuration, a carrier distributor in the basestation distributes, according to power load capacity of each transmitchannel and a total power of multiple carrier signals that need to bedistributed, a specified transmit channel for the multiple carriersignals, thereby improving efficiency of a module with multiplecarriers; in addition, the carrier distributor in the base station mayfurther deactivate an idle transmit channel, thereby reducing powerconsumption of the radio frequency module supporting multiple carriersand saving energy.

Embodiment 4

FIG. 3 is a schematic diagram of a carrier distribution method accordingto a fourth embodiment of the present invention. As shown in FIG. 3, thecarrier distribution method may be performed by a radio frequency modulesupporting multiple carriers that is of any one of the structures in thepreceding embodiments, and may specifically include the following steps.

Step 101: A carrier distributor distributes, according to power loadcapacity of each transmit channel and a total power of multiple carriersignals that need to be distributed, a specified transmit channel forthe multiple carrier signals, and sends a distribution result to acarrier synthesizer, where the distributing, by the carrier distributoraccording to the power load capacity of each transmit channel and thetotal power of the multiple carrier signals that need to be distributed,the specified transmit channel for the multiple carrier signals mayspecifically include the following situations:

situation 1: if the power load capacity of the specified transmitchannel is higher than the total power of the multiple carrier signals,centrally distributing the multiple carrier signals to the specifiedtransmit channel; and

situation 2: if the power load capacity of the specified transmitchannel is lower than the total power of the multiple carrier signals,preferentially and centrally distributing the multiple carrier signalsto the specified transmit channel, and distributing the remainingcarrier signals to another transmit channel.

Step 102: The carrier synthesizer synthesizes, according to thedistribution result of the carrier distributor, the multiple carriersignals that are distributed to the specified transmit channel, and thensend the synthesized signals to the specified transmit channel.

After step 102, the method may further include the following step.

Step 103: The carrier distributor deactivates an idle transmit channel.

Step 103 may be performed between step 101 and step 102, or performedafter step 102. Its specific time sequence is not limited in thisembodiment of the present invention. Step 103 may specifically includeif it is detected that an idle transmit channel to which no carrier isdistributed exists after the carrier distribution, sending, by thecarrier distributor, a deactivation instruction to a channel switchcorresponding to the idle transmit channel. In this way, the channelswitch may be instructed to deactivate the idle transmit channel,thereby reducing power consumption of the radio frequency module andsaving energy.

The multiple carrier signals in this embodiment of the present inventionmay include any one or any combination of a GSM carrier, a UMTS carrier,an LTE carrier, and a CDMA carrier.

In addition, one transmit channel may be set to an active state bydefault, and the carrier distributor preferentially and centrallydistributes the multiple carrier signals to the transmit channel that isin the active state by default.

According to this embodiment, in a situation of non-full configuration,a centrally distributing unit of the carrier distributor centrallydistributes, according to the power load capacity of each transmitchannel and the total power of the multiple carrier signals that need tobe distributed, the multiple carrier signals to a specified transmitchannel, thereby improving efficiency of a module with multiplecarriers; and the carrier distributor may deactivate an idle transmitchannel, thereby reducing the power consumption of the radio frequencymodule supporting multiple carriers and saving energy.

Persons of ordinary skill in the art may understand that all or part ofsteps of the method according to the embodiments may be implemented by aprogram instructing relevant hardware. The program may be stored in acomputer readable storage medium. When the program is executed, any partor all of the steps of the method according to the embodiments areperformed. For example, the carrier distributor distributes, accordingto the power load capacity of each transmit channel and the total powerof the multiple carrier signals that need to be distributed, thespecified transmit channel for the multiple carrier signals, and sendsthe distribution result to the carrier synthesizer; the carriersynthesizer synthesizes, according to the distribution result of thecarrier distributor, the multiple carrier signals that are distributedto the specified transmit channel, and then sends the synthesizedsignals to the specified transmit channel; the carrier distributordeactivates the idle transmit channel, and so on. The storage medium maybe any storage medium capable of storing program codes, for example, aROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the foregoing embodiments are merelyprovided for describing the technical solutions of the presentinvention, but not intended to limit the present invention. It should beunderstood by persons of ordinary skill in the art that although thepresent invention has been described in detail with reference to theembodiments, modifications can be made to the technical solutionsdescribed in the embodiments, or equivalent replacements can be made tosome technical features in the technical solutions, as long as suchmodifications or replacements do not cause the essence of correspondingtechnical solutions to depart from the spirit and scope of the presentinvention.

What is claimed is:
 1. A radio frequency module supporting multiplecarriers, comprising: a carrier generating apparatus; a carrierdistributor; a carrier synthesizer; and a plurality of transmitchannels; wherein the carrier generating apparatus communicates with thecarrier synthesizer, the carrier synthesizer communicates with thetransmit channels, and the carrier distributor communicates with thecarrier synthesizer and the transmit channels separately; wherein thecarrier generating apparatus is configured to generate multiple carriersignals; wherein the carrier distributor is configured to distribute,according to power load capacity of each transmit channel and a totalpower of multiple carrier signals that need to be distributed, aspecified transmit channel for the multiple carrier signals, and to senda distribution result to the carrier synthesizer; wherein the carriersynthesizer is configured to synthesize, according to the distributionresult of the carrier distributor, the multiple carrier signals that aredistributed to the specified transmit channel, and then to send thesynthesized signals to the specified transmit channel; and wherein thetransmit channels are configured to transmit the multiple carriersignals that are synthesized by the carrier synthesizer.
 2. The radiofrequency module supporting multiple carriers according to claim 1,wherein the carrier distributor is further configured to deactivate anidle transmit channel after sending the distribution result to thecarrier synthesizer.
 3. The radio frequency module supporting multiplecarriers according to claim 2, wherein a channel switch is set on thetransmit channel, wherein the channel switch is configured to activateor deactivate the transmit channel according to an instruction of thecarrier distributor.
 4. The radio frequency module supporting multiplecarriers according to claim 1, wherein a channel switch is set on thetransmit channel, wherein the channel switch is configured to activateor deactivate the transmit channel according to an instruction of thecarrier distributor.
 5. The radio frequency module supporting multiplecarriers according to claim 1, wherein the carrier distributor comprisesa preferentially distributing unit, configured to set one transmitchannel to an active state by default and to preferentially andcentrally distribute the multiple carrier signals to the transmitchannel that is in the active state by default.
 6. The radio frequencymodule supporting multiple carriers according to claim 1, wherein thecarrier distributor further comprises a centrally distributing unit,configured to centrally distribute the multiple carrier signals to thespecified transmit channel when the power load capacity of the specifiedtransmit channel is higher than the total power of the multiple carriersignals and to preferentially and centrally distribute the multiplecarrier signals to the specified transmit channel and distributeremaining carrier signals to another transmit channel if the power loadcapacity of the specified transmit channel is lower than the total powerof the multiple carrier signals.
 7. The radio frequency modulesupporting multiple carriers according to claim 1, wherein the carrierdistributor further comprises a deactivating unit, configured to send andeactivation instruction to a channel switch corresponding to an idletransmit channel to which no carrier is distributed when it is detectedthat the idle transmit channel exists after the carrier distribution. 8.The radio frequency module supporting multiple carriers according toclaim 1, wherein the multiple carrier signals comprise any one or anycombination of a GSM carrier, a UMTS carrier, an LTE carrier, and a CDMAcarrier; and wherein the carrier generating apparatus comprises any oneor any combination of a GSM carrier generator, a UMTS carrier generator,an LTE carrier generator, and a CDMA carrier generator.
 9. A basestation, comprising: a radio frequency module supporting multiplecarriers, the radio frequency module supporting multiple carriers, theradio frequency module comprising: a carrier generating apparatus; acarrier distributor; a carrier synthesizer; and a plurality of transmitchannels; wherein the carrier generating apparatus communicates with thecarrier synthesizer, the carrier synthesizer communicates with thetransmit channels, and the carrier distributor communicates with thecarrier synthesizer and the transmit channels separately; wherein thecarrier generating apparatus is configured to generate multiple carriersignals; wherein the carrier distributor is configured to distribute,according to power load capacity of each transmit channel and a totalpower of multiple carrier signals that need to be distributed, aspecified transmit channel for the multiple carrier signals, and send adistribution result to the carrier synthesizer; wherein the carriersynthesizer is configured to synthesize, according to the distributionresult of the carrier distributor, the multiple carrier signals that aredistributed to the specified transmit channel, and then send thesynthesized signals to the specified transmit channel; and wherein thetransmit channels are configured to transmit the multiple carriersignals that are synthesized by the carrier synthesizer.
 10. The basestation according to claim 9, wherein the carrier distributor is furtherconfigured to deactivate an idle transmit channel after sending thedistribution result to the carrier synthesizer.
 11. The base stationaccording to claim 9, wherein a channel switch is set on the transmitchannel, wherein the channel switch is configured to activate ordeactivate the transmit channel according to an instruction of thecarrier distributor.
 12. The base station according to claim 9, whereinthe carrier distributor comprises a preferentially distributing unit,configured to set one transmit channel to an active state by default,and to preferentially and centrally distribute the multiple carriersignals to the transmit channel that is in the active state by default.13. The base station according to claim 9, wherein the carrierdistributor further comprises a centrally distributing unit, configuredto centrally distribute the multiple carrier signals to the specifiedtransmit channel if the power load capacity of the specified transmitchannel is higher than the total power of the multiple carrier signalsand to preferentially and centrally distribute the multiple carriersignals to the specified transmit channel and distribute remainingcarrier signals to another transmit channel if the power load capacityof the specified transmit channel is lower than the total power of themultiple carrier signals.
 14. The base station according to claim 9,wherein the carrier distributor further comprises a deactivating unit,configured to send an deactivation instruction to a channel switchcorresponding to an idle transmit channel to which no carrier isdistributed when it is detected that the idle transmit channel existsafter the carrier distribution.
 15. The base station according to claim9, wherein the multiple carrier signals comprise any one or anycombination of a GSM carrier, a UMTS carrier, an LTE carrier, and a CDMAcarrier; and wherein the carrier generating apparatus comprises any oneor any combination of a GSM carrier generator, a UMTS carrier generator,an LTE carrier generator, and a CDMA carrier generator.
 16. A basestation, comprising: a carrier distributor; and a carrier synthesizer;wherein the carrier distributor is configured to distribute a specifiedtransmit channel for multiple carrier signals according to power loadcapacity of a plurality of transmit channels and a total power ofmultiple carrier signals that need to be distributed, the carrierdistributor also configured to send a distribution result to the carriersynthesizer; and wherein the carrier synthesizer is configured tosynthesize, according to the distribution result of the carrierdistributor, the multiple carrier signals that are distributed to thespecified transmit channel, and then send the synthesized signals to thespecified transmit channel.
 17. The base station according to claim 16,wherein the carrier distributor is further configured to deactivate anidle transmit channel after sending the distribution result to thecarrier synthesizer.
 18. The base station according to claim 16, whereina channel switch is set on the transmit channel, wherein the channelswitch is configured to activate or deactivate the transmit channelaccording to an instruction of the carrier distributor.
 19. The basestation according to claim 16, wherein the carrier distributor comprisesa preferentially distributing unit, configured to set one transmitchannel to an active state by default and to preferentially andcentrally distribute the multiple carrier signals to the transmitchannel that is in the active state by default.
 20. The base stationaccording to claim 16, wherein the carrier distributor further comprisesa centrally distributing unit, configured to centrally distribute themultiple carrier signals to the specified transmit channel if the powerload capacity of the specified transmit channel is higher than the totalpower of the multiple carrier signals and to preferentially andcentrally distribute the multiple carrier signals to the specifiedtransmit channel and distribute remaining carrier signals to anothertransmit channel if the power load capacity of the specified transmitchannel is lower than the total power of the multiple carrier signals.21. The base station according to claim 16, wherein the carrierdistributor further comprises a deactivating unit, configured to send andeactivation instruction to a channel switch corresponding to an idletransmit channel to which no carrier is distributed when it is detectedthat the idle transmit channel exists after the carrier distribution.